Supernatural is produced by the American WB TV station. It tells the story of supernatural phenomena, mostly from American urban legends and folklore. Dean (Jensen Ackles), who was dragged into the dark hell, opened his eyes in pain, struggled to climb out of the grave and found that his whole body was intact except for a palm print burn on his shoulder. In order to find Sam (Jared Padalecki), Dean asked Bobby (Jim Beaver) for help. This time, Ruby (Genevieve Cortese) appeared in the world in another image. At Bobby's call, the holy angel Castiel (Misha Collins) came to the world. It was he who brought Dean back to the world, and everything was God's will. Dean and Sam, who returned to the world safely, fought side by side again. The huge mysterious power hidden in Sam's body has been affecting his personality. What is this power?